This relates a question about how CPAN assigns names: XML::Parser, for example, defines a namespace which could represent one of any of the following:
- A module that uses its namespace for private modules to comprise a larger solution.
- A package that defines a general topic- modules within the namespace generally relate to the topic, but are otherwise unrelated to each other.
- An interface whose namespace contains implementation modules.
Perl doesn't have any explicit declaration to distinguish one approach from the other. But XML::Parser
is implemented as the last approach. And the Built_In_Styles member seems to be merely notational, not functional.
In fact, any module that shares the XML::Parser namespace can be invoked as a Style argument. I merely had to add some handler wrappers to get the desired output.